12006431 has 2 divisors, whose sum is σ = 12006432. Its totient is φ = 12006430.

The previous prime is 12006427. The next prime is 12006433. The reversal of 12006431 is 13460021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12006431 - 2² = 12006427 is a prime.

It is a super-2 number, since 2×12006431² = 288308770715522, which contains 22 as substring.

Together with 12006433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12006433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6003215 + 6003216.

It is an arithmetic number, because the mean of its divisors is an integer number (6003216).

Almost surely, 2^12006431 is an apocalyptic number.

12006431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12006431 is an equidigital number, since it uses as much as digits as its factorization.

12006431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12006431 is about 3465.0297257022. The cubic root of 12006431 is about 228.9837393029.

Adding to 12006431 its reverse (13460021), we get a palindrome (25466452).

The spelling of 12006431 in words is "twelve million, six thousand, four hundred thirty-one".